Update 1: Overview of flood waters, N'Djamena, Chad

Thu, 1 Nov 2012 17:02:17 GMT
Product ID: 1691 - English
Published: 1 Nov, 2012
GLIDE: FL-2012-1010-TCD
FootPrint (Lat x Long, WSG84 Geographic, decimal degrees)
TopLeft: 12.0228 x 14.9622
BottomRight: 12.1195 x 16.1246

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This map illustrates satellite-detected standing flood waters over affected districts and the IDP camps in N'Djamena, Chad. The situational map shows the flood extent as of 26 October 2012, detected with DMC imagery, Eastern and southern parts of the country have been hit by floods caused by heavy rains. It is likely that flood waters have been systematically underestimated along highly vegetated areas along main river banks, and within built-up urban areas because of the special characteristics of the satellite data used. This analysis has not yet been validated in the field. Please send ground feedback to UNITAR /UNOSAT.
Satellite Data (1): UK-DMC
Imagery Date: 26/10/2012
Resolution: 22m
Copyright: DMCii
Source: DMCii
Satellite Data (2): KOMPSAT
Imagery Date: 14/10/2012
Resolution: 4m
Copyright: KARI
Source: KARI
IDP and Ndjamena data: OCHA
Road Data : Google Map Maker / OSM / ESRI
Other Data: USGS, UNCS, NASA, NGA, IGN
Analysis : UNITAR / UNOSAT
Production: UNITAR / UNOSAT
Analysis conducted with ArcGIS v10 & v10.1
Coordinate System: WGS 1984 UTM Zone 33N
Projection: Transverse Mercator
Datum: WGS 1984
Units: Meter